Crontab not save affter a day

Hello everyone

I have a WD EX4100 , i connect ssh to my clound and i created a job with command : crontab -e

but after 1 day, being erased .

Please help me !! thanks

Hi, welcome to the community. 

Unfortunately I don’t have a EX4100 to test this out. Maybe another user that is more familiar with SSH can assist. However what is it that you are trying to do with cron? Maybe the EX could have a feature for this.